Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS4610108 A
Publication typeGrant
Application numberUS 06/684,073
Publication dateSep 9, 1986
Filing dateDec 20, 1984
Priority dateDec 20, 1984
Fee statusPaid
Publication number06684073, 684073, US 4610108 A, US 4610108A, US-A-4610108, US4610108 A, US4610108A
InventorsGary J. Marshik
Original AssigneeMarshik Gary J
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Balance spring locking slide block for tilt-out windows
US 4610108 A
Abstract
The invention relates to tilt-out window assemblies in which a window sash may be rotated from its normal vertical position causing a slide block connected to a spring balance assembly to be locked into place to prevent release of the spring balance assembly on tilting or removal of the window sash from the window frame. The slide block rides in the jamb channel in which the window sash normally slides up and down and incorporates a rotatable locking cam. The locking cam is rotated on tilting of the window sash so as to force a set of locking members against the sides of the window frame jamb channel to engage the block into a fixed position in the channel. The window sash is operatively connected to the locking cam to provide rotation thereof to lock the slidable block. The window sash may be removed from the frame and from engagement with the locking cam if desired.
Images(1)
Previous page
Next page
Claims(5)
What is claimed is:
1. A locking slide block for window jamb channels, comprising:
a body defining oppositely disposed sliding surfaces for guiding the block in a jamb channel, each of the sliding surfaces including an opening therein;
a pair of spaced locking members adapted for selectively engaging the jamb channel and locking the block in a fixed position, the members comprising the opposite outwardly directed ends of a generally U-shaped spring member, the ends of the spring member being serrated for penetrating the jamb channel, the spring member being received within the slide body and a serrated end portion of each member extending through one of the openings, respectively, the ends thereof being normally positioned within the openings on the sliding surfaces in a withdrawn position relative to the jamb channel so as not to interfere with the sliding movement of the block therein;
a rotary cam member and a transverse base in the body, the cam member being rotatably housed in the base in the space between the locking members, the cam member having oppositely disposed camming surfaces normally positioned in upper and lower position respectively on the cam whereby rotation of the cam member brings each one of the camming surfaces into contact with one of the locking members to urge them outwardly with respect to the associated sliding surfaces of the body for engagement with the jamb channel, the cam member including an enlarged head portion for holding the spring member within the body and a retaining tab at its end opposite the head portion engaging an end surface of the transverse base for retaining the slide block in assembled condition, and
means included with the cam member for facilitating operative connection between it and a tilt-out window sash for rotating the cam when tilting the window.
2. The block of claim 1 wherein the U-shaped spring member is carried in the body in an inverted position.
3. The block of claim 1 wherein the head portion of the cam member is adapted for operative connection to a window sash.
4. The block as in claim 1 wherein the base includes an open section for assembly purposes.
5. The block as in claim 4 wherein the spring member is flat stock and the openings in the sliding surfaces are slots.
Description
BACKGROUND

This invention relates generally to tilt-out windows, both of the take-out and non-take-out type. It is particularly directed to those types which include metal (aluminum) or vinyl sash guides or jamb channels, most particularly the vinyl type.

Rigid plastic extrusions are being used more frequently as side jamb channels in windows of this type. Vinyl is typically used and is preferred for this invention. Various types are well known.

Generally, windows of this type have been in use for some time. They are typically provided in a pivoted or tilt-out double-hung version. Their convenience for washing the outside of the window or for replacing broken panes has made them very popular.

The counterbalance system for holding such window sashes in an open or closed position has progressed from a counterweight to a spring balance assembly, various types of which are well known. The spring balance assembly is enclosed in the side jamb channels or weather strips on each side of the window sash.

One of the problems with the pivoted or tilt-out windows has been the retention of the end of the counterbalance spring assembly which is attached to or removably secured to the window sash itself. Since the window sash can be tilted out of the frame, or is even completely removable in some designs, it is desirable that the sash not be vertically movable when tilted out or when its full weight is not available to offset the pull of the spring balance assembly. It is desirable when tilting the window or removing it that the spring balance assembly be retained in a fixed position within the jamb channel by a positive locking arrangement and that the spring assembly not be allowed to move or to snap upwardly in an uncontrolled manner as, after a few such releases, the assembly may be deformed and its effectiveness reduced.

Many types of locking mechanisms have heretofore been available. Reference may be had to U.S. Pat. Nos. 4,364,199; 3,797,168; 3,844,066; 4,079,549; 3,676,956; 3,055,062; 3,842,540; 3,524,282; 3,195,174; and advertising articles entitled Caldwell Aluma-Tilt Balance by Caldwell Manufacturing Co., P.O. Box 444, Rochester, N.Y. 14602 and Jim Walter Window Components, Series 9000 Balance/Weatherstrip for Full-Tilt Windows by J.W.W.C. 1009 Algonquin/Sioux Falls, S.D. 57104.

A still further type of locking mechanism comprises a hook which has a sharp point to embed into one of the walls of the side jamb channel. However, this type of locking engagement is subject to being dislodged when downward pressure is applied.

SUMMARY OF THE INVENTION

The invention is directed to a novel locking mechanism for spring-balance tilt-out windows. The locking mechanism comprises a slide block shaped to ride up and down in the side jamb channels and which incorporates a pair of oppositely disposed extendable locking members which are operated by a rotatable cam member operatively connected to the window sash so as to rotate on window tilt-out to extend the locking members outwardly of the block for engagement into the walls of the jamb channel to lock the block in a fixed position therein. Since the spring balance assembly is connected to the block it is maintained in position until the window is rotated back into its normal vertical position whereby the cam releases the block for movement.

DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a double-hung window with the lower window sash in a tilted position;

FIG. 2 is an exploded perspective view of the slide block of the invention showing the interrelationship of its basic parts during assembly;

FIG. 3 is a partial cross-sectional view along lines 3--3 of FIG. 1 through the window frame and the front jamb channel to show the back side of the slide block (with reference to FIG. 2) and its position in the jamb track, with the head portion of the rotating locking cam removed for clarity and in a rotated "locked" position in the jamb channel;

FIG. 4 is a cross-sectional view similar to FIG. 3 with the rotatable locking cam in a normal "unlocked" or sliding position;

FIG. 5 is a cross-sectional view along line 5--5 of FIG. 3;

FIG. 6 is a cross-sectional view along line 6--6 of FIG. 4; and

FIG. 7 is a cross-sectional view of a typical vinyl jamb liner or channel.

DESCRIPTION OF PREFERRED EMBODIMENT

FIG. 1 shows the environment of the present invention, omitting details of the frame, and the spring balancing mechanism, as well as other structural details which are considered conventional. As for balancing mechanisms, which may be used with the present invention, any conventional balancing mechanism will serve the purpose. Since windows are symmetrical in construction, it is believed necessary to describe only one-half thereof in detail. Consequently, only the details of one side of the window and one jamb track thereof are shown.

The improved locking block or slide member of the invention is shown in connection with a double-hung tilt-out type window in FIG. 1. The frame of the window, indicated at 10 incorporates sashes 11 and 12 which are slidably mounted in jamb channels one of which is generally indicated at 15. Such jamb channels are ordinarily parallel to one another in the frame and the individual sashes slide vertically therein between closed and open positions. Conventionally, each sash has a balance spring assembly (not shown) associated therewith on either side of the sash and carried in the respective jamb channel in which the sash slides. As shown in FIG. 1, the lower sash 12 is shown in a tilted position. With such tilt of the sash, the improved balance spring locking block or slide member operates to lock itself in a fixed position by embedding the serrated ends of the spring member into the jamb channels, one to each side of the sash, so as to maintain the balance spring assembly in a fixed position during removal of the sash from the jamb channels for cleaning, replacement and the like. The spring balance assembly is thus maintained in a fixed position so that it will not move in the jamb channel and the sash may be readily replaced, rotated into the vertical position to unlock the locking block or slide member so as to allow vertical movement of the window in the jamb channels very readily.

A finger operated sliding guide or similar arrangement indicated at 13 holds the window in position in the normal operating condition by engaging the track 16 (best seen in FIG. 7), as is conventional.

As shown in FIG. 2, slide block 20, which slides vertically in jamb channels such as jamb channel 15, is of a generally rectangular shape having oppositely disposed sliding side surfaces 22 and 24, and upper head portion 26 and a lower enclosing bottom portion 28. Head portion 24 preferably includes a metal head plate 25 to which a spring balance mechanism (not shown) is connected. The metal head plate 25 serves as a stiffener for slider block 20 and prevents distortion of its shape from the forces exerted by the balance mechanism.

Slide block 20 is preferably made of a molded plastic material and is machined or otherwise smoothly finished on its sliding surfaces. CelconŽ or DelrinŽ acetal plastic is preferred. CelconŽ is a registered trademark of Celanese Chemical Co., New York, N.Y. DelrinŽ is a registered trademark of Hercules, Inc., Wilmington, Del.

Slide block 20 also has a partial transverse base 30 with an open top, indicated at 32 for receiving rotatable locking cam 34 having a tab 36 which passes through opening 32 and when cam 34 is rotated in base 30 rises on its arcuate surface 33 to hold cam 34 in block 20 (best seen in FIG. 6).

Locking cam 34 also includes oppositely disposed arcuate camming surfaces 40 and 42 separated by straight, relieved surfaces 44 and 46 and a relatively large flat head portion 50.

Head portion 50 acts to hold spring member 52 in position in the box-like enclosure 54 formed on the backside of slide block 20 (as shown with reference to FIG. 2). Enclosure 54 is formed by side members 22 and 24, bottom 28 and intermediate cross member 56. When locking cam 34 is inserted into base 30 with spring member 52 therebetween, the flat top of head 50 is flush with the edges of the members forming enclosure 54 to facilitate the fitting of slide block 20 into the jamb channel (best seen in FIG. 5).

Spring member 52 as shown includes oppositely serated end portions 58 and 69 which fit into slots 62 and 64, respectively to allow the extension (FIG. 3) and the retraction (FIG. 4) of serated ends 58 and 60 as the locking cam is rotated from the position shown in FIG. 4 to the position shown in FIG. 3.

The operation of the locking slide block will be clearly understood by reference to the drawings in which it has been previously noted that the slide block 20 is normally freely slidable in its jamb channel when the window sash to which it is operatively connected is in its normal vertical position. Upon the disengaging of sliding guide lock 13, the window sash is permitted to be tilted out to the pivoted position shown in FIG. 1. The movement of the sash is transmitted through a connecting pin (not shown) extending from the window sash into the conforming opening 63 in cam member 34 its connection to the rotary cam member 34 causing it to extend locking members 58 and 60 to be forced into the walls of jamb channel 15 thus holding the slide block in a locked position.

While the invention has been described with reference to certain features, structure and material, various modifications may be made without departing from the principle and scope of this invention as defined in the following claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3055062 *May 29, 1961Sep 25, 1962PetersPivoted sash type window
US3195174 *Aug 16, 1961Jul 20, 1965Caldwell Mfg CoSash balance connecting means
US3434236 *Jun 7, 1967Mar 25, 1969Kassl Window Co IncSash lock
US3524282 *Oct 30, 1967Aug 18, 1970Caldwell Mfg CoSash guiding and balancing apparatus for removable sashes
US3676956 *Jun 22, 1971Jul 18, 1972Densmore D J CoReadily removable window with weather-stripping
US3797168 *Oct 21, 1971Mar 19, 1974Trout DAutomatically-locking positively-unlocked sash balance
US3842540 *Feb 22, 1972Oct 22, 1974Anderson V E Mfg CoWindow structure
US3844066 *Jul 13, 1973Oct 29, 1974Caldwell Mfg CoTiltably-removable automatically-locking window sash
US4079549 *Aug 26, 1976Mar 21, 1978Jim Walter CorporationBalance spring lock for tilt out sash
US4364199 *Jul 11, 1980Dec 21, 1982The Celotex CorporationRemovable-tilt-out window construction
US4452012 *Aug 9, 1982Jun 5, 1984Caldwell Manufacturing CompanyPivot shoe for sash balance
Non-Patent Citations
Reference
1 *Caldwell Aluma Tilt Balance by Caldwell Manufacturing Co., P.O. Box 444, Rochester, New York 14602.
2Caldwell Aluma-Tilt Balance by Caldwell Manufacturing Co., P.O. Box 444, Rochester, New York 14602.
3 *Jim Walter Window Components, Series 9000 Balance/Weatherstrip for Full Tilt Windows by J. W. W. C. 1009 Algonquin/Sioux Falls, South Dakota.
4Jim Walter Window Components, Series 9000 Balance/Weatherstrip for Full-Tilt Windows by J. W. W. C. 1009 Algonquin/Sioux Falls, South Dakota.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4799333 *Sep 22, 1987Jan 24, 1989Caldwell Manufacturing CompanyLock shoe system for take-out window
US4813180 *Jul 9, 1987Mar 21, 1989Harvey IndustriesDouble-hung window pivot
US4887389 *Mar 16, 1988Dec 19, 1989Newell Manufacturing CompanyTilt lock jambliner and slidable block
US4914861 *Aug 30, 1989Apr 10, 1990Intek Weatherseal Products Inc.Window tilt clutch system
US4958462 *Jun 5, 1989Sep 25, 1990Cross Rex DLocking pivot shoe
US5027557 *Aug 30, 1989Jul 2, 1991Intek Weatherseal Products, Inc.Sound silenced window frame jamb liner sash guide pocket
US5243783 *Jun 24, 1992Sep 14, 1993Andersen CorporationLocking slide block
US5301467 *Sep 2, 1993Apr 12, 1994Andersen CorporationLocking slide block
US5371971 *May 4, 1993Dec 13, 1994Ashland Products, Inc.Sash balance brake and pivot pin assembly
US5377384 *Apr 5, 1993Jan 3, 1995Riegelman; Harry M.Locking pivot shoe
US5414960 *Feb 4, 1994May 16, 1995O'donnell; Richard H.Window & door sash frictional locking device
US5448858 *Jun 7, 1993Sep 12, 1995Briggs; Jeffrey M.Sash retainer for window assembly
US5452495 *Jun 7, 1993Sep 26, 1995Briggs; Jeffrey M.Brake system for window assembly
US5544450 *Aug 7, 1992Aug 13, 1996Andersen CorporationDouble-hung tilting sash type window system
US5566507 *Jun 7, 1995Oct 22, 1996Andersen CorporationDouble-hung tilting sash type window system
US5632117 *Jan 13, 1995May 27, 1997Ashland Prod IncSash balance brake assembly
US5657579 *Oct 19, 1994Aug 19, 1997Andersen CorporationMethod and apparatus for securing a sash within a frame
US5669180 *May 29, 1996Sep 23, 1997Ro Mai Ind IncWindow balance brake shoe and pivot assembly
US5806243 *May 21, 1997Sep 15, 1998Ashland Products, Inc.Sash balance brake assembly
US5829196 *May 30, 1997Nov 3, 1998Ro-Mai Industries, Inc.Window balance brake shoe and pivot assembly
US5924243 *Jul 11, 1997Jul 20, 1999Ashland Products, Inc.Rotor for a sash balance brake and pivot pin assembly
US5927014 *Jun 11, 1996Jul 27, 1999Shaul GoldenbergDouble locking pivot shoe
US6216392 *Jun 25, 1999Apr 17, 2001Royal Plastics Inc.Sliding window seal
US6550184Feb 9, 2001Apr 22, 2003Ashland Products, Inc.Brake shoe for sash window or door assembly
US6622342Jun 6, 2001Sep 23, 2003Ashland Products, Inc.Block and tackle balance assembly with brake shoe
US6658794Feb 23, 2000Dec 9, 2003Newell Operating CompanyGuide assembly for a tilt-out sash window
US6679000Jan 11, 2002Jan 20, 2004Amesbury Group, Inc.Snap lock balance shoe and system for a pivotable window
US6718693Jan 16, 2002Apr 13, 2004Newell Industrial CorporationWindow tilt latch
US6820368May 23, 2003Nov 23, 2004Amesbury Group, Inc.Snap lock balance shoe and system for a pivotable window
US6871885 *Apr 4, 2002Mar 29, 2005420820 Ontario LimitedCombination cam lock/tilt latch and latching block therefor with added security feature
US6886295Feb 1, 2002May 3, 2005Ashland Products, Inc.Brake shoe with spring brake member
US6901702 *Jul 18, 2003Jun 7, 2005Luke K. LiangBalance shoe
US6915609Feb 14, 2003Jul 12, 2005Ashland Products, Inc.Brake shoe for sash window or door assembly
US6931788Jun 8, 2004Aug 23, 2005Amesbury Group, Inc.Locking balance shoe and system for a pivotable window
US6990710 *Nov 5, 2003Jan 31, 2006Kunz John RCounterbalance system for a tilt-in window having an improved shoe assembly and anchor mount
US7013529Oct 22, 2002Mar 21, 2006Newell Operating CompanyBlock and tackle sash balance brake assembly
US7069621Jul 23, 2003Jul 4, 2006Pomeroy, IncorporatedBlock and tackle sash balance shoe
US7143475Jun 9, 2003Dec 5, 2006Newell Operating CompanyBlock and tackle balance assembly with brake shoe
US7165359 *May 24, 2005Jan 23, 2007Vision Industries Group, Inc.Balance shoe
US7191562Apr 8, 2005Mar 20, 2007Amesbury Group, Inc.Locking balance shoe and system for a pivotable window
US7194839Apr 28, 2005Mar 27, 2007Newell Operating CompanyBrake shoe for sash window or door assembly
US7197849 *Jul 18, 2003Apr 3, 2007Vision Industries Group, Inc.Balance shoe for tilt windows
US7210267Feb 9, 2004May 1, 2007Amesbury Group, Inc.Non-takeout lock for a pivot pin of tilt-type windows
US7673372Oct 26, 2006Mar 9, 2010Newell Operating CompanyBlock and tackle balance assembly with brake shoe
US7726073 *Apr 11, 2006Jun 1, 2010S.I.L. Plastic Sales & Supplies Inc.Sliding shoe for a window frame
US8132290 *Jul 17, 2008Mar 13, 2012Vision Industries Group, Inc.Block and tackle balance assembly with rotatable shoe
US8424248Jan 20, 2010Apr 23, 2013Amesbury Group, Inc.Method of installing a locking balance shoe and system for a pivotable window
US9133656Apr 6, 2011Sep 15, 2015Amesbury Group, Inc.Inverted constant force window balance for tilt sash
US9580950Jan 17, 2007Feb 28, 2017Amesbury Group, Inc.Locking balance shoe and system for a pivotable window
US20030074764 *Oct 22, 2002Apr 24, 2003Dean PettitBlock and tackle sash balance brake assembly
US20030145523 *Feb 1, 2002Aug 7, 2003Jason AnnesBrake shoe with spring brake member
US20030213096 *Jun 9, 2003Nov 20, 2003Jason AnnesBlock and tackle balance assembly with brake shoe
US20040163210 *Jul 23, 2003Aug 26, 2004Neeman MalekBlock and tackle sash balance shoe
US20040216380 *Jun 8, 2004Nov 4, 2004Amesbury Group, Inc.Snap lock balance shoe and system for a pivotable window
US20040237256 *May 30, 2003Dec 2, 2004Lutfallah Anthony G.Block and tackle balance assembly with brake shoe
US20050011127 *Jul 18, 2003Jan 20, 2005Liang Luke K.Balance shoe for tilt windows
US20050011128 *Jul 18, 2003Jan 20, 2005Liang Luke K.Balance shoe
US20050016065 *Jul 26, 2004Jan 27, 2005Harold Keith BraidSash window counterbalance brake arrangement
US20050091791 *Nov 5, 2003May 5, 2005Kunz John R.Counterbalance system for a tilt-in window having an improved shoe assembly and anchor mount
US20050172560 *Feb 9, 2004Aug 11, 2005Versteeg Lawrence J.Non-takeout lock for tilt-type windows
US20050178068 *Apr 8, 2005Aug 18, 2005Amesbury Group, Inc.Snap lock balance shoe and system for a pivotable window
US20050183340 *Apr 28, 2005Aug 25, 2005O'donnell Richard H.Brake shoe for sash window or door assembly
US20050193631 *Mar 8, 2004Sep 8, 2005Gary MarshikBalance shoe for tilt-in window sashes
US20050229492 *Apr 7, 2005Oct 20, 2005Caldwell Manufacturing CompanySlotted extruded inverted carrier with improved pin ingress and egress
US20050241235 *May 24, 2005Nov 3, 2005Liang Luke KBalance shoe
US20060230682 *Apr 11, 2006Oct 19, 2006S.I.L. Plastic Sales & Supplies Inc.Sliding shoe for a window frame
US20070094931 *Oct 26, 2006May 3, 2007Newell Operating CompanyBlock And Tackle Balance Assembly With Brake Shoe
US20070113479 *Jan 17, 2007May 24, 2007Amesbury Group, Inc.Snap lock balance shoe and system for a pivotable window
US20070151157 *Mar 12, 2007Jul 5, 2007Newell Operating CompanyBrake Shoe For Sash Window Or Door Assembly
US20070256462 *Apr 30, 2007Nov 8, 2007Amesbury GroupNon-takeout lock for tilt-type windows
US20100011669 *Jul 17, 2008Jan 21, 2010Luke LiangBlock and tackle balance assembly with rotatable shoe
US20100115854 *Jan 20, 2010May 13, 2010Amesbury GroupSnap Lock Balance Shoe and System for a Pivotable Window
EP0359555A2 *Sep 13, 1989Mar 21, 1990Shaul GoldenbergTilt slider
EP0359555A3 *Sep 13, 1989Aug 7, 1991Shaul GoldenbergTilt slider
Classifications
U.S. Classification49/181, 49/453
International ClassificationE05D15/22
Cooperative ClassificationE05D15/22, E05Y2900/148
European ClassificationE05D15/22
Legal Events
DateCodeEventDescription
Dec 30, 1986CCCertificate of correction
Oct 3, 1989FPAYFee payment
Year of fee payment: 4
Sep 10, 1993FPAYFee payment
Year of fee payment: 8
Dec 22, 1997FPAYFee payment
Year of fee payment: 12
Oct 4, 1999ASAssignment
Owner name: FASTEK PRODUCTS, INCORPORATED, SOUTH DAKOTA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARSHIK, GARY J.;REEL/FRAME:010281/0726
Effective date: 19990920
May 16, 2000ASAssignment
Owner name: FPI, INC., SOUTH DAKOTA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FASTEK PRODUCTS, INCORPORATED;REEL/FRAME:010822/0258
Effective date: 20000508
Jun 12, 2000ASAssignment
Owner name: FASTEK PRODUCTS, INC. (A SOUTH DAKOTA CORPORATION)
Free format text: CHANGE OF NAME;ASSIGNOR:FPI, INC. (A SOUTH DAKOTA CORPORATION);REEL/FRAME:010901/0551
Effective date: 20000522